Sorry guys but I'm not super interested in this anymore, but best of luck to ya all.
1. As far as vehicles go, I know TheMaster99 and I haven't really thought about it (wow, we're underprepared) but I am going to sorta spitball here without asking our lord and saviour GM: I think the best way to do it would have them as a feature of the game, yes, but require an investment of time to get them working. After that, they'll cut down on other missions/make them easier. Of course, it'll mostly be down to creativity, as we don't want everything bogged down with dice rolls. Does that sound okay? (Obviously I'll be asking TheMaster99 at some point about it, and I'll leave it up to him.)
2. Don't worry about it! The key can be easily fixed if more people become interested ^^ There's no cap at this point for as long as there is still empty space on the map to fill.
3. It's the traditional bite 'em up style plague, and everyone who dies rises up as a zombie regardless of whether or not they have been bitten. The "everyone's infected" scenario.
(#oldschoollists)